Open a 7z file
Get the files out of a 7z archive without installing 7-Zip. The archive is read on your own device and never uploaded.
- Processed on your device
- No upload, no waiting
- No signup, no watermark
How it works
Add your 7z
Drop it in. LZMA and LZMA2, which is what almost every 7z uses, are both read.
Look inside
Every file is listed with its size and folder.
Take what you want
Download one file, or all of them together as a ZIP.
Frequently asked questions
Do I need 7-Zip installed?
No. The reader is part of this page.
Is my archive uploaded?
No. The archive is opened on your own device, by code that runs inside this page. Nothing is uploaded, nothing is stored, and it works with the Wi-Fi switched off once the page has loaded. That matters more for archives than for most files — a zip of your tax returns or a backup of a folder is exactly the kind of thing that should not be handed to a stranger's server.
Can you make a 7z as well?
Not yet. Reading a 7z and writing one are very different amounts of work, and the reference implementation is licensed under the LGPL, which this site cannot use. Reading is possible because libarchive implemented the format independently under a permissive licence. For making an archive, ZIP is the safer choice anyway: it opens on every computer with nothing installed, which a 7z does not.
Which 7z features work?
LZMA, LZMA2, BZip2, Deflate and PPMd compression, folders, and archives split across the usual solid blocks. Encrypted archives are listed but cannot be read without their password, which is not yet supported.
Is there a size limit?
Your device's memory, rather than a server's upload cap. Very large archives are opened a file at a time where the format allows it, so a big ZIP lists instantly and only the file you ask for is unpacked.
Is it safe to open a 7z from someone I do not know?
Archives are the one kind of file whose CONTENTS can be hostile, so two old attacks are handled before you see anything. A file inside an archive can be named "../../something" to try to escape the folder it is unpacked into — those names are clamped and you are told which ones were changed. And an archive can be a few kilobytes that unpacks to terabytes, which would take the browser tab down with it; that is measured and refused rather than attempted.